geoengineering

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Sunlight at night: US startup’s demonstration of lighting Earth from space draws criticism

Company imitates reflection of sun from mirrors, prompting pushback from some scientists, environmentalists and California localsLocals in a rural area of California were recently startled to see dazzlingly bright light shining down from nearby mountains at night, illuminating a swathe of the desert below.Unbeknown to them, the strange nocturnal illumination was the latest step in

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Lobsters and acidic seas: can shellfish help neutralise one of the greatest threats to the ocean?

Crustaceans are the subject of tests to see if alkalis added to seawater, so it absorbs more CO2, harm marine life. But Trump’s halt to funding threatens to scupper the researchFor many in the US region of New England, the lobster roll is synonymous with summertime. Loaded into a toasted bun, chunks of the sweet

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How one controversial startup hopes to cool the planet

Stardust Solutions believes that it can solve climate change—for a price. The Israel-based geoengineering startup has said it expects  nations will soon pay it more than a billion dollars a year to launch specially equipped aircraft into the stratosphere. Once they’ve reached the necessary altitude, those planes will disperse particles engineered to reflect away enough

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